Hi Barbee,
I have a similar story as far as ORN goes. I needed all my teeth extracted due to treatment, but it was not covered by Medicare. The oral surgeon in the cancer center did it for charity, but I was charged by the anesthesiologist, who I worked out a payment plan, but somewhere along the line, probably when I changed hospitals, i stopped making payments, and just remembered it as I write. I think they write it up as a loss. As a result from surgery, I developed ORN, and need further surgery, sequestromy, to heal the wound, which didn't work either.
I asked for more HBOT, and Pentofoxilline/Vitamin E, but the surgeon said it was already late stage ORN, there are three stages at one society, four another, so I had a mandibulectomy, which I needed additional surgery for the leg wound.
As far as medicare goes, you may have to appeal any denials. I was also reading into teeth extractions surgically, which may be covered if it’s done by other than a dentist, but at this point of time, four years, I forget all the particulars. There is a medicare ruling on this, if you want to look it up or may have posted here in 2014.
I hope this helps.